Ditching-jack



` 2 Sheets- Sheet 1, H. HEER, Jr. DITGHING JACK (No Model.)

Patented Jan. 25, E898.

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2 Sheets-Sheet 2.

(NQ Model.)

H. HEER., J'r. DITGHING JAGK.

Patented Jan. 25,1898.

UNITED Sri/litres artnr @radica HENRY HEER, JR., OF ALLIANCE, OHIO.v

SPECIFICATION forming part of Letters Patent No. 597,849, dated January 25, 1898.

Application tiled March l0, l 3 9 '7.

To all whom it' may concern:

Be it known that I, HENRY HEER, Jr., of Alliance, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Ditching-JaCks; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which `it appertains to make and use the same.

.represents a view ot my improvement in which it is represented as supporting the side walls of a ditch. Fig. 2 is a sectional view of the body portion or casing and its attached parts. Fig. 8 is a view in elevation of the adjustingscrew. Fig. 4 is a detached view of the swivelhead. Figs. 5 and 6 are views of the socketplate. Figs. 7 and S are views of the socketplate cup. Fig. 9 `is a view of my improvement, the body portion or casing of which is enlarged or strengthened at its center; and

y Fig. lO represents a jack provided with an adjusting-screw Working in each end of the body portion or casing.

A and B represent the two main portions oi the jack. One comprises a sleeve or socket having a long coarse internal thread l and the other a rod or stem having a thread 2 corresponding in pitch to and adapted to screw' into thethreads l of sleeve or socket B, but of a length considerably' less than the length of threads l.

Shank A has an end 3, which enters a foot ai, in Which it is swiveled, and the extreme end of this portion 3 is upset to hold these parts permanent-ly together; also, the shank is providedivith the angular enlargement et, which may be forged, cast, or riveted on the shank, its purposebeing to receive a wrench on the exterior or a pin through the hole 5 to effect the turning of the shank. This shank is held in the barrel B by means oa removable screw-cap 6, and ythis cap maybe placed on the shank before the enlargement is Serial No. 626,876. (No model.)

formed. At the outer end of the barrel B is provided a ball 7, as shown in Fig. 2. This ball has a flattened portion 8. This ball enters a sectional socket 9 10, section 9 of which is integral with the foot ll, and the other sectibn l0 is adapted to be removably secured to section 9. Section l0 is provided with an offset l2, the object of which is to engage the attened portion 8 of the ball and prevent the latter from rotating with relation to the body of the jack. While this iiattened and offset construction in the ball and socket is quite desirable, yet it is very necessary When adjustment is used at both ends, as in Fig. S. vIt might, however, be omitted in a jack having an adjustment at one end only.

Fig. 9 represents a barrel B', thickened at its center and gradually tapering toward its opposite ends, While Fig. l0 represents a barrel B2, thickened at its center and provided with an adjusting-screw at each of its ends.

It may be mentioned in conclusion that the ball 7 is usually fastened to an end of the barrel by means of a rivet, so that it may be removed if necessary to renew a Worn-out one; also, it may be stated that the Wrench or turning instrument might be applied to the barrel instead of to the shank, if so desired, by simply reversing the parts.

Other'slight changes might be made like- Wise in the various parts described Without departing from the spirit and scope of my invention, and hence I do not Wish to limit myself to the precise construction herein set forth; but,

Having fully described my invention, what l claim as new, and desire to secure by Letters Patent, is-

ln a jack, the combination With a body portion, one end of which is in the general form of a ball with a iiattened side, of a foot con nected with this ball-shaped end and having an oftset formed therein which engages the iiattened side of the ball, said foot capable of tilting with relation to the end of the body portion on which it is mounted but incapable of turning axially thereon.

In testimony whereof I have signed this specification in the presence of two subscribing Witnesses. Y

HENRY HEER, JR.

lNitnesses:

JOHN BRACHER, J OHN Kenn.

IOO 

